package cn.xaut.XAUT迎春杯预热;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Scanner;

/**
 * B - ASCII码排序
 */
public class demoB {

    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);
        while (input.hasNext()) {
            char[] cs = input.nextLine().toCharArray();
            Arrays.sort(cs);
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < cs.length; i++) {
                sb.append(cs[i]);
                if (i != cs.length - 1)
                    sb.append(" ");
            }
            System.out.println(sb);
        }
    }
}
